CN114624013A - Pre-tightening force adjusting and dragging force testing device for rolling linear guide rail pair - Google Patents
Pre-tightening force adjusting and dragging force testing device for rolling linear guide rail pair Download PDFInfo
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- CN114624013A CN114624013A CN202210278708.8A CN202210278708A CN114624013A CN 114624013 A CN114624013 A CN 114624013A CN 202210278708 A CN202210278708 A CN 202210278708A CN 114624013 A CN114624013 A CN 114624013A
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- Prior art keywords
- guide rail
- linear guide
- rolling linear
- force
- tightening
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25H—WORKSHOP EQUIPMENT, e.g. FOR MARKING-OUT WORK; STORAGE MEANS FOR WORKSHOPS
- B25H1/00—Work benches; Portable stands or supports for positioning portable tools or work to be operated on thereby
- B25H1/10—Work benches; Portable stands or supports for positioning portable tools or work to be operated on thereby with provision for adjusting holders for tool or work
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/0028—Force sensors associated with force applying means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/0028—Force sensors associated with force applying means
- G01L5/0038—Force sensors associated with force applying means applying a pushing force
Abstract
The invention discloses a pretightening force adjusting and dragging force testing device for a rolling linear guide rail pair. The bottom plate is used for fixing two groups of rolling linear guide rail pairs to be tested; the detection system is used for detecting the pre-tightening displacement between the sliding blocks of the two groups of rolling linear guide rail pairs to be detected and applying the pre-tightening force to the two groups of rolling linear guide rail pairs to be detected by the pre-tightening force adjusting mechanism; the driving mechanism is used for driving the pre-tightening force adjusting mechanism to do linear motion, and the detection system is used for detecting dragging force applied by the driving mechanism to the pre-tightening force adjusting mechanism and the moving speed of the sliding blocks of the two groups of rolling linear guide rail pairs to be detected. The invention can realize the accurate and efficient adjustment of the pretightening force of the rolling linear guide rail pair and the accurate and efficient test of the dragging force.
Description
Technical Field
The invention relates to the technical field of performance testing of a rolling linear guide rail pair, in particular to a pretightening force adjusting and dragging force testing device for the rolling linear guide rail pair.
Background
The rolling linear guide rail pair is a core functional component forming a motion system, plays a key role in guiding and supporting, and is widely applied to various types of numerical control equipment. The pretightening force and the dragging force are important parameters for representing the performance of the rolling linear guide rail pair, and in practical engineering application, how to apply different pretightening force and dragging force to the rolling linear guide rail pair and accurately measure the values of the pretightening force and the dragging force is a key problem to be solved urgently.
The traditional method for applying the pretightening force is to select a ball with a diameter larger than a designed standard diameter to carry out interference fit, and the contact surface of the ball and a raceway is deformed by certain fit interference, so that a guide rail and a sliding block are in a pressing state, and the aim of applying the pretightening force is fulfilled. Although the method can adjust the pretightening force of the rolling linear guide rail pair, the accurate and efficient adjustment of the pretightening force is difficult to realize due to the fact that the size of the ball is in a strong nonlinear relation with the pretightening force. In addition, an effective means is not available for carrying out the drag force test on the linear guide rail pair, and the test efficiency and the test accuracy are insufficient.
At present, in practical engineering application, due to the lack of a special device for adjusting the pretightening force and testing the dragging force of the rolling linear guide rail pair, the pretightening force adjustment and the dragging force testing mainly depend on the experience of engineers, the accuracy is poor, and the efficiency is low.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, an object of the present invention is to provide a device for adjusting a pre-tightening force and testing a dragging force of a rolling linear guide pair, which can achieve precise and efficient adjustment of the pre-tightening force and precise and efficient testing of the dragging force of the rolling linear guide pair.
The pre-tightening force adjusting and dragging force testing device for the rolling linear guide rail pair comprises:
the base plate is used for fixing two groups of rolling linear guide rail pairs to be detected, the guide rails of the two groups of rolling linear guide rail pairs to be detected are parallel to each other and extend along a first direction, the sliding blocks of the two groups of rolling linear guide rail pairs to be detected are oppositely arranged in a second direction, and the second direction is perpendicular to the first direction;
the pre-tightening force adjusting mechanisms are used for being respectively fixed on the sliding blocks of the two groups of rolling linear guide rail pairs to be tested; the pre-tightening force adjusting mechanism is used for changing pre-tightening displacement between the sliding blocks of the two groups of rolling linear guide rail pairs to be tested, so that pre-tightening force of the two groups of rolling linear guide rail pairs to be tested is adjusted;
the driving mechanism is fixed on the bottom plate and connected with the pre-tightening force adjusting mechanism, and when the driving mechanism drives the pre-tightening force adjusting mechanism to do linear motion, the pre-tightening force adjusting mechanism drives the sliding block to synchronously move along the guide rail of the rolling linear guide rail pair to be detected;
when the pre-tightening force adjusting mechanism applies pre-tightening force to the two groups of rolling linear guide rail pairs to be detected, the detection system is used for detecting pre-tightening displacement between the sliding blocks of the two groups of rolling linear guide rail pairs to be detected and applying pre-tightening force to the two groups of rolling linear guide rail pairs to be detected by the pre-tightening force adjusting mechanism; when the driving mechanism drives the pre-tightening force adjusting mechanism to do linear motion, the detection system is used for detecting the dragging force applied by the driving mechanism to the pre-tightening force adjusting mechanism and the moving speed of the sliding blocks of the two groups of rolling linear guide rail pairs to be detected.
The device for adjusting the pre-tightening force and testing the dragging force of the rolling linear guide rail pair has the following advantages that firstly, the pre-tightening force of the two groups of rolling linear guide rail pairs to be tested can be accurately adjusted; secondly, pre-tightening displacement between the sliding blocks of the two groups of rolling linear guide rail pairs to be tested under the specific pre-tightening force can be obtained, so that the proper diameter of the ball between the guide rail and the sliding block of the rolling linear guide rail pair to be tested for achieving the specific pre-tightening force can be conveniently and accurately calculated according to the pre-tightening displacement, the experience of an engineer is not required to be relied on, the efficiency of adjusting the pre-tightening force of the linear guide rail pair is high, and the accuracy is good; thirdly, the dragging force of the two groups of rolling linear guide rail pairs to be tested can be accurately and efficiently tested; and fourthly, the relation between the pretightening force and the dragging force of the slide block of the rolling linear guide rail pair to be tested at different moving speeds can be obtained, so that the rolling linear guide rail pair with the appropriate pretightening force can be selected according to application occasions, and the requirements of different application occasions on the moving speed of the slide block are met.
In some embodiments, the pretightening force adjustment mechanism includes first workstation, second workstation and electric drive assembly, first workstation is fixed two sets ofly one of them is vice in the rolling linear guide that awaits measuring vice the rolling linear guide that awaits measuring is vice on the slider, the second workstation is fixed two sets ofly another of the rolling linear guide that awaits measuring is vice in the rolling linear guide that awaits measuring vice on the slider, electric drive assembly connects first workstation with the second workstation, electric drive assembly is used for driving the second workstation with first workstation is in relative movement in the second direction.
In some embodiments, the electric drive assembly includes a first motor, a worm wheel, a screw rod and a nut, the first motor is connected with the worm, the worm is arranged along the first direction, the worm is installed on the first workbench through the first supporting seat, the worm wheel is meshed with the worm, the screw rod coaxially penetrates through and is fixed on the worm wheel along the second direction, one end of the screw rod is rotatably installed on the first workbench, the nut is arranged on the second workbench, and the other end of the screw rod penetrates through the nut and is in threaded connection with the nut; when the first motor drives the worm, the worm drives the worm wheel and the screw to synchronously rotate, so that the first workbench and the second workbench relatively move in the second direction.
In some embodiments, a first linear guide pair is disposed between the first table and the second table.
In some embodiments, the driving mechanism includes a second motor, a ball screw pair, a third table, and a driving link, the second motor is connected to the ball screw pair, the ball screw pair is disposed on the bottom plate, an axial direction of the ball screw pair is parallel to the first direction, the third table is mounted on the ball screw pair, and the driving link is connected between the third table and the pretension adjusting mechanism; when the second motor drives the ball screw pair to move, the ball screw pair synchronously drives the third workbench and the driving connecting rod to move in the first direction, so that the pretightening force adjusting mechanism and the sliding block are driven to synchronously move in the first direction.
In some embodiments, the detection system comprises a pretension sensor, a pretension displacement sensor, a drag force sensor, and a drag speed sensor; the pre-tightening force sensor and the pre-tightening displacement sensor are both arranged on the pre-tightening force adjusting mechanism and are used for detecting pre-tightening force applied to the two groups of rolling linear guide rail pairs to be detected by the pre-tightening force adjusting mechanism and pre-tightening displacement between the sliding blocks of the two groups of rolling linear guide rail pairs to be detected; the dragging force sensor is arranged between the pretightening force adjusting mechanism and the driving mechanism and is used for detecting the dragging force of the driving mechanism to the pretightening force adjusting mechanism; the dragging speed sensor is arranged on one side of any one of the two groups of rolling linear guide rail pairs to be detected and is used for measuring the corresponding movement speed of the sliding block.
In some embodiments, the drag force sensor is disposed between the drive link and the pretension adjustment mechanism.
In some embodiments, the position of the dragging speed sensor on one side of the corresponding rolling linear guide rail pair to be detected is adjustable.
In some embodiments, the pre-tightening force adjusting and dragging force testing device for the rolling linear guide rail pair further includes a guide rod, the guide rod is fixed on the bottom plate, the extending direction of the guide rod is parallel to the first direction, and the dragging speed sensor is slidably disposed on the guide rod.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic structural diagram of a pretightening force adjusting and dragging force testing apparatus for a rolling linear guide rail pair according to an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a pretension adjusting mechanism according to an embodiment of the present invention.
Fig. 3 is a schematic structural diagram of a driving mechanism according to an embodiment of the present invention.
Fig. 4 is a schematic view illustrating two sets of rolling linear guide rail pairs to be measured arranged on a second base plate in parallel according to an embodiment of the present invention.
Reference numerals:
pre-tightening force adjusting and dragging force testing device 1000 for rolling linear guide rail pair
Pretightening force adjusting mechanism 2
First table 201 second table 202 electric drive assembly 203 first motor 2031
Worm 2032, worm wheel 2033, screw 2034, nut 2035, first linear guide rail pair 204
Third working table 303 drives connecting rod 304, second linear guide pair 305 and second base 306
Pretightening force sensor 401 pretensions displacement sensor 402 dragging force sensor 403
To-be-tested rolling linear guide rail pair 5
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
The pretension adjusting and dragging force testing device 1000 for a rolling linear guide rail pair according to an embodiment of the present invention is described below with reference to fig. 1 to 4.
As shown in fig. 1 to 4, a pre-tightening force adjusting and dragging force testing apparatus 1000 for rolling linear guide rail pairs according to an embodiment of the present invention includes a bottom plate 1, a pre-tightening force adjusting mechanism 2, a driving mechanism 3, and a detecting system, where the bottom plate 1 is used to fix two sets of rolling linear guide rail pairs 5 to be tested, as shown in fig. 4, guide rails 502 of the two sets of rolling linear guide rail pairs 5 to be tested are parallel to each other and both extend along a first direction, and sliders 503 of the two sets of rolling linear guide rail pairs 5 to be tested are arranged oppositely in a second direction, and the second direction is perpendicular to the first direction; the pre-tightening force adjusting mechanisms 2 are respectively fixed on the sliding blocks 503 of the two groups of rolling linear guide rail pairs 5 to be tested; the pre-tightening force adjusting mechanism 2 is used for changing pre-tightening displacement between the sliding blocks 503 of the two groups of rolling linear guide rail pairs 5 to be tested, so that pre-tightening force of the two groups of rolling linear guide rail pairs 5 to be tested is adjusted; the driving mechanism 3 is fixed on the bottom plate 1 and connected with the pretightening force adjusting mechanism 2, and when the driving mechanism 3 drives the pretightening force adjusting mechanism 2 to do linear motion, the pretightening force adjusting mechanism 2 drives the sliding block 503 to synchronously move along the sliding rail of the rolling linear guide rail pair 5 to be detected; when the pretightening force adjusting mechanism 2 applies pretightening force to the two groups of rolling linear guide rail pairs 5 to be tested, the detection system is used for detecting pretightening displacement between the sliding blocks 503 of the two groups of rolling linear guide rail pairs 5 to be tested, and the pretightening force adjusting mechanism 2 applies pretightening force to the two groups of rolling linear guide rail pairs 5 to be tested; when the driving mechanism 3 drives the pretightening force adjusting mechanism 2 to perform linear motion, the detection system is used for detecting the dragging force applied by the driving mechanism 3 to the pretightening force adjusting mechanism 2 and the moving speed of the sliding blocks 503 of the two sets of rolling linear guide rail pairs 5 to be detected.
Specifically, the bottom plate 1 is used for fixing two sets of rolling linear guide rail pairs 5 to be tested, as shown in fig. 1, the bottom plate 1 is used for providing mounting positions for the rolling linear guide rail pairs 5 to be tested and the driving mechanism 3, and the mounting is convenient, reliable and stable. The guide rails 502 of the two to-be-tested rolling linear guide rail pairs 5 are parallel to each other and extend along the first direction, the sliding blocks 503 of the two to-be-tested rolling linear guide rail pairs 5 are arranged oppositely in the second direction, and the second direction is perpendicular to the first direction, so that the compression degree of the sliding blocks 503 and the guide rails 502 can be changed by changing the distance between the sliding blocks 503 of the two to-be-tested rolling linear guide rail pairs 5 in the first direction, and the pre-tightening force of the to-be-tested rolling linear guide rail pairs 5 can be adjusted.
The pre-tightening force adjusting mechanisms 2 are respectively fixed on the sliding blocks 503 of the two groups of rolling linear guide rail pairs 5 to be tested; the pre-tightening force adjusting mechanism 2 is used for changing pre-tightening displacement between the sliding blocks 503 of the two groups of rolling linear guide rail pairs 5 to be tested, so as to adjust the pre-tightening force of the two groups of rolling linear guide rail pairs 5 to be tested. Specifically, as shown in fig. 1, the pretightening force adjusting mechanism 2 may respectively drive the sliding blocks 503 of the two sets of rolling linear guide rail pairs 5 to be measured to move in the second direction, so as to change the pretightening force displacement between the sliding blocks 503 of the two sets of rolling linear guide rail pairs 5 to be measured, and achieve accurate adjustment of the pretightening force of the rolling linear guide rail pairs 5 to be measured. It can be understood that the pre-tightening displacement between the sliding blocks 503 of the two rolling linear guide rail pairs to be measured 5 refers to the distance between the sliding blocks 503 of the two rolling linear guide rail pairs to be measured 5, the variation of the pre-tightening displacement between the sliding blocks 503 of the two rolling linear guide rail pairs to be measured 5 is equal to the sum of the variations of the distances between the sliding blocks 503 and the guide rails 502 of the two rolling linear guide rail pairs to be measured 5, meanwhile, the pre-tightening force between the sliding blocks 503 and the guide rails 502 of the two rolling linear guide rail pairs to be measured 5 is also varied, and the magnitude of the force applied by the pre-tightening force adjusting mechanism 2 to the two rolling linear guide rail pairs to be measured 5 is equal to the magnitude of the pre-tightening force of each rolling linear guide rail pair to be measured 5.
The driving mechanism 3 is fixed on the bottom plate 1 and connected with the pretightening force adjusting mechanism 2, and when the driving mechanism 3 drives the pretightening force adjusting mechanism 2 to do linear motion, the pretightening force adjusting mechanism 2 drives the sliding block 503 to synchronously move along the guide rail 502 of the rolling linear guide rail pair 5 to be tested. It can be understood that actuating mechanism 3 exerts the power of dragging to slider 503 through pretightning force adjustment mechanism 2 to drag the power to the rolling linear guide that awaits measuring pair 5 and carry out the accurate test, the installation test process is convenient, actuating mechanism 3 drives the slider 503 motion for guide rail 502 of two sets of rolling linear guide that awaits measuring pair 5 simultaneously, the problem of vibrations or offset can not appear in guide rail 502 and slider 503 in the motion process, whole motion process is more steady, the test result is more accurate, more accord with the in-service use operating mode.
When the pretightening force adjusting mechanism 2 applies pretightening force to the two groups of rolling linear guide rail pairs 5 to be tested, the detection system is used for detecting pretightening displacement between the sliding blocks 503 of the two groups of rolling linear guide rail pairs 5 to be tested, and the pretightening force adjusting mechanism 2 applies pretightening force to the two groups of rolling linear guide rail pairs 5 to be tested; when the driving mechanism 3 drives the pretightening force adjusting mechanism 2 to perform linear motion, the detection system is used for detecting the dragging force applied by the driving mechanism 3 to the pretightening force adjusting mechanism 2 and the moving speed of the sliding blocks 503 of the two sets of rolling linear guide rail pairs 5 to be detected. It should be noted that, when the pretightening force adjusting mechanism 2 applies a pretightening force to the two sets of rolling linear guide rail pairs 5 to be measured, the pretightening force and the pretightening displacement may be detected by using the detection system to obtain a relationship between the pretightening force and the pretightening displacement, so that a determined pretightening displacement may be obtained according to a required pretightening force, and a suitable diameter of the ball between the guide rail 502 and the slider 503 of the rolling linear guide rail pair 5 to be measured may be calculated according to the pretightening displacement, without depending on experience of an engineer, so that the pretightening force adjusting efficiency is high, and the accuracy is good. When the driving mechanism 3 drives the pretightening force adjusting mechanism 2 to do linear motion, the detection system detects the dragging force and the moving speed of the sliding block 503 of the rolling linear guide rail pair 5 to be detected corresponding to the dragging force, so that the relation between the pretightening force and the dragging force of the sliding block 503 of the rolling linear guide rail pair 5 to be detected at different moving speeds can be obtained, the rolling linear guide rail pair with the appropriate pretightening force can be selected according to application occasions, and the requirements of different application occasions on the moving speed of the sliding block 503 can be met.
The pre-tightening force adjusting and dragging force testing device 1000 for the rolling linear guide rail pair in the embodiment of the invention performs adjusting test on the two groups of rolling linear guide rail pairs 5 to be tested which are arranged in parallel, so that the device is more in line with the actual use condition of the rolling linear guide rail pair, and the actual applicability of the adjusting and detecting result is better.
According to the pre-tightening force adjusting and dragging force testing device 1000 for the rolling linear guide rail pair, when the device is used, the rolling linear guide rail pair 5 to be tested is fixed on the bottom plate 1, the pre-tightening force adjusting mechanism 2 is fixed on the rolling linear guide rail pair 5 to be tested, the driving mechanism 3 is connected with the pre-tightening force adjusting mechanism 2, then the pre-tightening force adjusting mechanism 2 is utilized to apply pre-tightening force to the two groups of rolling linear guide rail pairs 5 to be tested, the detection mechanism detects the pre-tightening force applied to the rolling linear guide rail pair 5 to be tested by the pre-tightening force adjusting mechanism 2 and pre-tightening displacement generated between the sliding blocks 503 of the two groups of rolling linear guide rail pairs 5 to be tested, then the driving mechanism 3 drags the pre-tightening force adjusting mechanism 2 to move linearly under the condition that the pre-tightening displacement between the sliding blocks 503 of the two groups of rolling linear guide rail pairs 5 to be tested is kept unchanged, and the sliding blocks 503 of the two groups of rolling linear guide rail pairs 5 to be tested are driven to move along the two groups of rolling linear guide rail pairs 5 to be tested when the pre-tightening force adjusting mechanism 2 moves The guide rails 502 move synchronously, and meanwhile, the detection mechanism detects the dragging force of the driving mechanism 3 to the pretightening force adjusting mechanism 2 and the moving speed of the sliding block 503 of the rolling linear guide rail pair 5 to be detected, so that a primary adjustment test process of the two rolling linear guide rail pairs 5 to be detected is completed.
According to the device 1000 for adjusting the pre-tightening force and testing the dragging force of the rolling linear guide rail pair, the advantages that firstly, the pre-tightening force of the two groups of rolling linear guide rail pairs 5 to be tested can be accurately adjusted; secondly, pre-tightening displacement between the sliding blocks 503 of the two groups of rolling linear guide rail pairs 5 to be tested under the specific pre-tightening force can be obtained, so that the pre-tightening displacement can be conveniently and accurately calculated, in order to achieve the specific pre-tightening force, the proper diameter of the balls between the guide rail 502 and the sliding blocks 503 of the rolling linear guide rail pairs 5 to be tested is obtained, the experience of engineers is not required, the efficiency of adjusting the pre-tightening force of the linear guide rail pairs is high, and the accuracy is good; thirdly, the dragging force of the two groups of rolling linear guide rail pairs 5 to be tested can be accurately and efficiently tested; fourthly, the relation between the pretightening force and the dragging force of the sliding block 503 of the rolling linear guide rail pair 5 to be tested at different moving speeds can be obtained, so that the rolling linear guide rail pair with the appropriate pretightening force can be selected according to application occasions, and the requirements of different application occasions on the moving speed of the sliding block 503 can be met.
In some embodiments, the pretensioning force adjusting mechanism 2 includes a first workbench 201, a second workbench 202, and an electric driving assembly 203, the first workbench 201 is fixed on a sliding block 503 of one rolling linear guide pair 5 to be tested of the two rolling linear guide pairs 5 to be tested, the second workbench 202 is fixed on a sliding block 503 of the other rolling linear guide pair 5 to be tested of the two rolling linear guide pairs 5 to be tested, the electric driving assembly 203 is connected with the first workbench 201 and the second workbench 202, and the electric driving assembly 203 is configured to drive the second workbench 202 and the first workbench 201 to move relatively in the second direction. It can be understood that, the first workbench 201 and the second workbench 202 can move in the second direction in the opposite direction or in the opposite direction under the driving of the electric driving component 203 to respectively drive the sliding blocks 503 of the two sets of rolling linear guide rail pairs 5 to be detected to move in the second direction in the opposite direction or in the opposite direction, so as to adjust the pre-tightening displacement between the sliding blocks 503 of the two sets of rolling linear guide rail pairs 5 to be detected, and further to adjust the pre-tightening force of the two sets of rolling linear guide rail pairs 5 to be detected, and by adjusting the pre-tightening displacement between the sliding blocks 503 by using the electric driving component 203, the adjusting precision is higher, the controllability is better, and the use is more convenient.
Preferably, the first table 201 and the second table 202 are engaged with each other, so that when the first table 201 and the second table 202 move relatively, the movement planes of the first table 201 and the second table 202 are always kept in the same movement plane, and the movement is more stable.
In some embodiments, the electric driving assembly 203 includes a first motor 2031, a worm 2032, a worm wheel 2033, a screw 2034, and a nut 2035, the first motor 2031 is connected to the worm 2032, the worm 2032 is arranged along a first direction, the worm 2032 is mounted on the first table 201 through a first support seat, the worm wheel 2033 is engaged with the worm 2032, the screw 2034 coaxially penetrates and is fixed on the worm wheel 2033 along a second direction, one end of the screw 2034 is rotatably mounted on the first table 201, the nut 2035 is disposed on the second table 202, and the other end of the screw 2034 penetrates through the nut 2035 and is in threaded connection with the nut 2035; when the first motor 2031 drives the worm 2032, the worm 2032 drives the worm wheel 2033 and the screw 2034 to rotate synchronously, so that the first workbench 201 and the second workbench 202 move relatively in the second direction, and then the first workbench 201 and the second workbench 202 can respectively drive the sliding blocks 503 of the two sets of rolling linear guide rail pairs 5 to be measured to move relatively in the second direction, thereby adjusting the pre-tightening displacement between the sliding blocks 503 of the two sets of rolling linear guide rail pairs 5 to be measured, and realizing the accurate adjustment of the pre-tightening force of the two sets of rolling linear guide rail pairs 5 to be measured. In addition, the worm gear is adopted to drive the screw 2034 to rotate, so that the overall structure distribution of the pretightening force adjusting mechanism 2 is more compact.
Preferably, a groove for accommodating a part of the worm wheel 2033 is formed at the top of the first workbench 201, so that the overall structure of the pretightening force adjusting mechanism 2 is distributed more tightly, and the occupied space is smaller.
In some embodiments, a first linear guide pair 204 is disposed between the first table 201 and the second table 202. It should be noted that the first linear guide pair 204 is strictly arranged along the second direction, so that the first workbench 201 and the second workbench 202 can be guided to move relatively in the second direction, and the arrangement of the first linear guide pair 204 plays a role in guiding on one hand, so that the first workbench 201 and the second workbench 202 can be well prevented from shifting in the process of moving relatively; on the other hand, abrasion of the first workbench 201 and the second workbench 202 caused by relative movement friction can be reduced or avoided, and the first linear guide rail pair 204 can provide good support rigidity for the first workbench 201 and the second workbench 202, so that the adjusting and testing precision of the pretightening force adjusting and dragging force testing device 1000 for the rolling linear guide rail pair is improved. Specifically, the first linear guide pair 204 includes a first slider 503 and a first guide 502, the first slider 503 is slidably disposed on the first guide 502, the first slider 503 is fixed to the first table 201, and the first guide 502 is fixed to the second table 202.
Preferably, the first linear guide pair 204 is symmetrically disposed in plurality.
In some embodiments, the driving mechanism 3 includes a second motor 301, a ball screw pair 302, a third table 303, and a driving link 304, the second motor 301 is connected to the ball screw pair 302, the ball screw pair 302 is disposed on the base plate 1, an axial direction of the ball screw pair 302 is parallel to the first direction, the third table 303 is mounted on the ball screw pair 302, and the driving link 304 is connected between the third table 303 and the pretension adjusting mechanism 2; when the second motor 301 drives the ball screw pair 302 to move, the ball screw pair 302 synchronously drives the third worktable 303 and the driving connecting rod 304 to move in the first direction, so as to drive the pretightening force adjusting mechanism 2 and the sliding block 503 to synchronously move in the first direction, so as to accurately test the dragging force of the rolling linear guide rail pair 5 to be tested.
Optionally, the two sets of rolling linear guide rail pairs 5 to be tested are fixed on the first base 501, and the first base 501 is installed on the bottom plate 1, so that the installation is convenient and reliable.
Preferably, as shown in the figure, the driving mechanism 3 further includes two sets of second linear guide rail pairs 305 and second bases 306, the second bases 306 are fixed on the base plate 1, and the top of the second bases 306 is flush with the top of the first bases 501, and the two sets of second linear guide rail pairs 305 are disposed on the second bases 306, so that the installation and test process is more convenient; two sets of second linear guide pair 305 set up respectively in ball screw pair 302's both sides and parallel with ball screw pair 302, and third workstation 303 is installed on two sets of second linear guide pair 305, is favorable to making third workstation 303 more steady in the removal.
Specifically, the ball screw assembly 302 includes two bearing blocks 3021 and a screw rod 3022, the two bearing blocks 3021 are fixed on the second base 306, two ends of the screw rod 3022 are rotatably mounted on the two bearing blocks 3021, the second motor 301 is connected to one end of the screw rod 3022, and the screw rod 3022 is in threaded connection with the third table 303; the second motor 301 rotates the lead screw 3022, so that the third table 303 moves in the axial direction of the lead screw 3022, and drives the lead screw 3022 to rotate.
In some embodiments, the detection system includes a pretension sensor 401, a pretension displacement sensor 402, a drag force sensor 403, and a drag speed sensor 404; the pre-tightening force sensor 401 and the pre-tightening displacement sensor 402 are both arranged on the pre-tightening force adjusting mechanism 2 and used for detecting pre-tightening force applied by the pre-tightening force adjusting mechanism 2 to the two groups of rolling linear guide rail pairs to be tested 5 and pre-tightening displacement between the sliding blocks 503 of the two groups of rolling linear guide rail pairs to be tested 5, so that the installation and test process is more convenient, and the accuracy of pre-tightening force adjustment is also ensured. The dragging force sensor 403 is arranged between the pretightening force adjusting mechanism 2 and the driving mechanism 3 and used for detecting the dragging force of the driving mechanism 3 to the pretightening force adjusting mechanism 2, so that the dragging force test is more accurate, and the installation and test process is more convenient. The dragging speed sensor 404 is arranged at one side of any one group of rolling linear guide rail pair 5 to be measured in the two groups of rolling linear guide rail pairs 5 to be measured, and is used for measuring the movement speed of the corresponding slide block 503, because the sliding blocks 503 of the two rolling linear guide rail pairs 5 to be tested move synchronously, the speed of the sliding block 503 of any rolling linear guide rail pair 5 to be tested in the two rolling linear guide rail pairs 5 to be tested is only needed to be measured, the dragging speed sensor 404 detects the moving speed of the sliding block 503 of the rolling linear guide rail pair 5 to be tested, the relation between the pretightening force applied by the pretightening force adjusting mechanism 2 to the rolling linear guide rail pair 5 to be tested and the dragging force applied by the driving mechanism 3 to the pretightening force adjusting mechanism 2 is obtained at different moving speeds, so that the rolling linear guide rail pair with the appropriate pretightening force is selected for application occasions, and the requirements of different application occasions on the moving speed of the sliding block 503 are met. Specifically, the dragging speed sensor 404 may be a laser type dragging speed sensor 404 or a sensor such as a grating, which can be used for measuring speed.
Optionally, the pre-tightening force sensor 401 and the pre-tightening displacement sensor 402 are both disposed between the first workbench 201 and the second workbench 202 and are respectively connected to the first workbench 201 and the second workbench 202, so that the pre-tightening force sensor 401 and the pre-tightening displacement sensor 402 can detect displacement changes between the first workbench 201 and the second workbench 202 to obtain pre-tightening displacements between the sliders 503 of the two sets of rolling linear guide rail pairs 5 to be detected and pre-tightening forces of the two sets of rolling linear guide rail pairs 5 to be detected, and the detection process is convenient and accurate. Without limitation, pretension sensor 401 and pretension displacement sensor 402 of the present invention may be mounted in any suitable location depending on the type of sensor selected.
Optionally, the components for displaying of the pretension sensor 401 and the pretension displacement sensor 402 may be directly mounted on the first workbench 201 and the second workbench 202 (as shown in fig. 1), or may be directly connected to an external display device to display the detection data.
In some embodiments, the drag force sensor 403 is disposed between the driving link 304 and the pretension adjusting mechanism 2 to detect the drag force of the driving link 304 on the pretension adjusting mechanism 2, and the detection process is convenient and accurate.
In some embodiments, as shown in fig. 1, the position of the dragging speed sensor 404 at one side of the corresponding rolling linear guide pair 5 to be tested is adjustable, so that the pre-tightening force adjusting and dragging force testing apparatus 1000 for the rolling linear guide pair according to the present invention can carry different types of speed sensors, and has a wider application range. For example, when a laser type dragging speed sensor 404 is used, the dragging speed sensor 404 can measure the speed of the whole movement process of the sliding block 503 by adjusting the position of the dragging speed sensor 404.
In some embodiments, as shown in fig. 1, the preload adjustment and towing force testing apparatus 1000 for a rolling linear guide rail pair according to an embodiment of the present invention further includes a guide rod 6, the guide rod 6 is fixed on the bottom plate 1, an extending direction of the guide rod 6 is parallel to the first direction, and the towing speed sensor 404 is slidably disposed on the guide rod 6, so that the position of the towing speed sensor 404 can be adjusted to carry different types of sensors.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like are intended to mean that a particular feature, structure, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (9)
1. The utility model provides a pretightning force is adjusted and is dragged power testing arrangement for rolling linear guide is vice which characterized in that includes:
the device comprises a base plate, a first guide rail pair, a second guide rail pair, a first guide rail pair and a second guide rail pair, wherein the base plate is used for fixing the two rolling linear guide rail pairs to be tested, the guide rails of the two rolling linear guide rail pairs to be tested are parallel to each other and extend along a first direction, the sliding blocks of the two rolling linear guide rail pairs to be tested are oppositely arranged in a second direction, and the second direction is vertical to the first direction;
the pre-tightening force adjusting mechanisms are used for being respectively fixed on the sliding blocks of the two groups of rolling linear guide rail pairs to be tested; the pre-tightening force adjusting mechanism is used for changing pre-tightening displacement between the sliding blocks of the two groups of rolling linear guide rail pairs to be tested, so that pre-tightening force of the two groups of rolling linear guide rail pairs to be tested is adjusted;
the driving mechanism is fixed on the bottom plate and connected with the pre-tightening force adjusting mechanism, and when the driving mechanism drives the pre-tightening force adjusting mechanism to do linear motion, the pre-tightening force adjusting mechanism drives the sliding block to synchronously move along the guide rail of the rolling linear guide rail pair to be detected;
when the pre-tightening force adjusting mechanism applies pre-tightening force to the two groups of rolling linear guide rail pairs to be detected, the detection system is used for detecting pre-tightening displacement between the sliding blocks of the two groups of rolling linear guide rail pairs to be detected and applying pre-tightening force to the two groups of rolling linear guide rail pairs to be detected by the pre-tightening force adjusting mechanism; when the driving mechanism drives the pre-tightening force adjusting mechanism to do linear motion, the detection system is used for detecting the dragging force applied by the driving mechanism to the pre-tightening force adjusting mechanism and the moving speed of the sliding blocks of the two groups of rolling linear guide rail pairs to be detected.
2. The device for adjusting the pre-tightening force and testing the dragging force for the rolling linear guide rail pair according to claim 1, wherein the pre-tightening force adjusting mechanism comprises a first workbench, a second workbench and an electric driving assembly, the first workbench is fixed on the sliding block of one of the two rolling linear guide rail pairs to be tested, the second workbench is fixed on the sliding block of the other rolling linear guide rail pair to be tested, the electric driving assembly is connected with the first workbench and the second workbench, and the electric driving assembly is used for driving the second workbench and the first workbench to move relatively in the second direction.
3. The pre-tightening force adjusting and dragging force testing device for the rolling linear guide rail pair according to claim 2, wherein the electric driving assembly comprises a first motor, a worm wheel, a screw rod and a nut, the first motor is connected with the worm, the worm is arranged along the first direction, the worm is mounted on the first workbench through the first supporting seat, the worm wheel is meshed with the worm, the screw rod coaxially penetrates through and is fixed on the worm wheel along the second direction, one end of the screw rod is rotatably mounted on the first workbench, the nut is arranged on the second workbench, and the other end of the screw rod penetrates through the nut and is in threaded connection with the nut; when the first motor drives the worm, the worm drives the worm wheel and the screw to synchronously rotate, so that the first workbench and the second workbench relatively move in the second direction.
4. The pre-tightening force adjusting and dragging force testing device for the rolling linear guide rail pair according to claim 2, wherein a first linear guide rail pair is arranged between the first workbench and the second workbench.
5. The preload force adjustment and traction force test device for the rolling linear guide rail pair according to claim 1, wherein the driving mechanism comprises a second motor, a ball screw pair, a third table and a driving link, the second motor is connected with the ball screw pair, the ball screw pair is disposed on the base plate, an axial direction of the ball screw pair is parallel to the first direction, the third table is mounted on the ball screw pair, and the driving link is connected between the third table and the preload force adjustment mechanism; when the second motor drives the ball screw pair to move, the ball screw pair synchronously drives the third workbench and the driving connecting rod to move in the first direction, so that the pretightening force adjusting mechanism and the sliding block are driven to synchronously move in the first direction.
6. The device for adjusting the pretightening force and testing the dragging force of the rolling linear guide rail pair according to any one of claims 1 to 5, wherein the detection system comprises a pretightening force sensor, a pretightening displacement sensor, a dragging force sensor and a dragging speed sensor; the pre-tightening force sensor and the pre-tightening displacement sensor are arranged on the pre-tightening force adjusting mechanism and are used for detecting pre-tightening force applied to the two groups of rolling linear guide rail pairs to be detected by the pre-tightening force adjusting mechanism and pre-tightening displacement between the sliding blocks of the two groups of rolling linear guide rail pairs to be detected; the dragging force sensor is arranged between the pretightening force adjusting mechanism and the driving mechanism and is used for detecting the dragging force of the driving mechanism to the pretightening force adjusting mechanism; the dragging speed sensor is arranged on one side of any one of the two groups of rolling linear guide rail pairs to be detected and is used for measuring the corresponding movement speed of the sliding block.
7. The preload force adjustment and towering force test apparatus for a rolling linear guide pair as claimed in claim 6, wherein said towering force sensor is disposed between said drive link and said preload adjustment mechanism.
8. The device for adjusting the pre-tightening force and testing the dragging force for the rolling linear guide rail pair according to claim 6, wherein the position of the dragging speed sensor at one side of the corresponding rolling linear guide rail pair to be tested is adjustable.
9. The pre-tightening force adjusting and dragging force testing device for the rolling linear guide rail pair according to claim 8, further comprising a guide rod fixed on the bottom plate, wherein the extending direction of the guide rod is parallel to the first direction, and the dragging speed sensor is slidably disposed on the guide rod.
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| CN202210278708.8A CN114624013B (en) | 2022-03-17 | 2022-03-17 | Pre-tightening force adjusting and dragging force testing device for rolling linear guide rail pair |
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| CN202210278708.8A CN114624013B (en) | 2022-03-17 | 2022-03-17 | Pre-tightening force adjusting and dragging force testing device for rolling linear guide rail pair |
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